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QUARTERLY SEDIMENTATION POND INSPECTION REPORT <br />CDMR Rule 4.05.9(17) <br />Mine: Lorenato <br />NPDES ID. No.: Pond #10A-Loadout <br />Inspection Period: Second Quarter 2007 <br />Inspection Date: 627/07 <br />General Description or Reference to Site Plan: <br />This pond is located east of the coal loadout facility and south of the railroad tracks <br />The pond is partiaf(y incised into alluvium and the embankment keyed into fhe <br />subsurface strata. Side copes are less than 2H:1V. The pond discharges into Lorencito <br />Canyon Creek. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erosion forming Gullies: <br />3). Is wave action posing erosion: <br />On the Upstream embankment? <br />At the principal spillway inlet? <br />Excellent Moderate ew Poor <br />Extensive Same ~ None <br />Yes <br />Yes <br />4). Erosion of the downstream toe of the embankment? Yes <br />Cause of erosion can be attributed to: <br />5). Is seepage occurring through the dam? Yes <br />Could this seepage puce potential instabiliyl? <br />No ll <br />No t,- <br />No fr- <br />No ~ <br />PRINCIPAL SPILLWAY <br />1 }. Is the principal spilMray system in working order? <br />2). Is the inlet free of debris and restrictive material? <br />3j. Is the discharge outlet free of restrictive material? <br />4). Is erceion occurring at the discharge outlet? <br />Evaluate the severity: Extensive Moderate <br />Yes li' No <br />Yes ~' No <br />Yes /~ No <br />Yes No ~~ <br />Just starting None <br />Page 1 of 2 <br />